Our Story

Welcome to Nordisk Renhet

At Nordisk Renhet, our mission is simple: to help people rediscover healthier skin and hair by addressing the root cause of dryness, irritation, and thinning—your shower water.

For years, we struggled with persistent skin issues like dry skin, a flaky scalp, and constant irritation. Despite trying various skincare products, the problems always came back. It wasn’t until we dug deeper into the role of water in our daily routines that we discovered the truth: the water we shower in is often full of harmful toxins like chlorine, heavy metals, and contaminants. These substances can strip your skin of moisture, cause irritation, and even affect hair growth.

That's when we decided to take action. By creating Nordisk Renhet, we wanted to provide a natural, simple solution that could help people like you transform your skin and hair, without the need for harsh chemicals.

Our flagship product, the Duschvattenfilter, removes over 90% of harmful toxins in your water, leaving you with softer, hydrated skin and stronger, shinier hair—simply by filtering your shower water.

We believe in the power of clean water for clean living. It's not just about looking good—it's about feeling confident in your skin and rediscovering wellness, one shower at a time.

Join thousands of people who have made the switch to toxin-free showers. Let’s redefine what wellness means together.

Understanding the Science Behind Hard Water's Impact

Hard Water and Eczema Risk:

Children in elementary/primary school exposed to hard water may experience a 43% increased risk of eczema.

A meta-analysis showed increased odds of atopic eczema in children exposed to harder water.

Living in a hard water area is associated with an increased risk of atopic dermatitis (AD).

One study noted a statistically significant increased risk of atopic eczema in primary school-aged children exposed to hard water (OR 1.43; 95% CI 1.09, 1.87).

Hard water may contribute to the development of atopic eczema in early life.

Hard Water, Skin Barrier Function, and TEWL:

People with eczema and a specific gene mutation (FLG) experience almost double the skin dryness after washing with harsh soaps in hard water.

Atopic Dermatitis (AD) patients with a filaggrin (FLG) mutation showed a 94% greater increase in TEWL after being washed with sodium lauryl sulfate (SLS) in hard water.

Hard water can reduce skin barrier function, regardless of chlorine levels.

The increase in TEWL correlates with the amount of SLS deposited on the skin.

Water softening mitigates the negative effect of hard water on skin barrier function.

Hard Water and Surfactant Deposition:

Hard water can cause almost three times as much soap (SLS) to stick to your skin.

Hard water is associated with 2.8 ± 0.6-fold greater SLS deposition on the skin compared to deionized water.

High calcium levels in hard water reduce the solubility of surfactants, increasing their deposition on the skin.

Hard water increases skin exposure to harmful surfactants.

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